A catalytic combustion device for exhaust gas treatment

Abstract

The utility model discloses a kind of catalytic combustion equipment for waste gas treatment belongs to environmental protection equipment field, including base, the top of the base is fixedly connected with catalytic combustion furnace and filter box, the side of the filter box away from catalytic combustion furnace, the side of the filter box is fixedly connected with air inlet pipe, the top of the catalytic combustion furnace is fixedly connected with air outlet pipe, catalytic mechanism is arranged between the filter box and catalytic combustion furnace, the catalytic mechanism includes communicating pipe;By setting shunt disc and multiple shunt pipes, waste gas is evenly distributed to catalytic combustion furnace inside, avoids the phenomenon that local catalyst is overloaded or not fully utilized, significantly improves the utilization of catalyst, the combination design of first catalytic carrier and second catalytic carrier increases catalytic area, improves catalytic efficiency, while the design of vent hole ensures that gas flows smoothly, further improves the treatment effect.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection equipment technology, specifically relating to a catalytic combustion device for waste gas treatment. Background Technology

[0002] With the rapid development of industrialization, the problem of waste gas emissions has become increasingly serious, causing significant impacts on the environment and human health. In order to reduce the emission of harmful gases, catalytic combustion technology has been gradually applied to the field of waste gas treatment.

[0003] According to the published patent CN216726217U: An organic waste gas catalytic combustion device includes a control device, a dry filter box, an activated carbon adsorption box, an adsorption fan, a catalytic combustion furnace, and a circulation pipeline; the dry filter box is equipped with a filter device for filtering dust and impurities; the activated carbon adsorption box is equipped with an adsorption inlet, an adsorption outlet, a desorption inlet, and a desorption outlet, and the dry filter box is connected to the adsorption fan through the activated carbon adsorption box; the air inlet and outlet of the circulation pipeline are both connected to the catalytic combustion furnace, and the desorption inlet and desorption outlet are both connected to the circulation pipeline. This organic waste gas catalytic combustion device segments the processes of filtration, adsorption, desorption, and catalytic combustion to prevent organic waste gas from directly contacting an ignition source, thereby reducing the probability of fire and explosion during the treatment process and making the use of the organic waste gas catalytic combustion device safer.

[0004] However, some shortcomings still exist, such as the uneven airflow distribution inside the catalytic combustion furnace. This can be addressed through this patent. Figure 1 and Figure 5 It can be seen that the exhaust gas enters the catalytic combustion furnace directly through the outlet of the circulating pipe for catalytic combustion without any diversion setting. This results in the exhaust gas not being in complete contact with the catalytic material, leading to low catalyst utilization in some areas and the inability to fully utilize the catalytic effect of the catalyst. Utility Model Content

[0005] The purpose of this invention is to provide a catalytic combustion device for waste gas treatment, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a catalytic combustion device for waste gas treatment, comprising a base, a catalytic combustion furnace and a filter box fixedly connected to the top of the base, an inlet pipe fixedly connected to one side of the filter box away from the catalytic combustion furnace, an outlet pipe fixedly connected to the top of the catalytic combustion furnace, a catalytic mechanism provided between the filter box and the catalytic combustion furnace, the catalytic mechanism including a connecting pipe fixedly connected to the other side of the filter box, a diverter plate fixedly connected to one end of the connecting pipe, a plurality of diverter pipes fixedly connected to one side of the diverter plate, one end of the diverter pipe extending into the interior of the catalytic combustion furnace, a support frame inserted into the interior of the catalytic combustion furnace, a second connecting plate fixedly connected to the top of the support frame, the second connecting plate being located at the top of the catalytic combustion furnace, a first catalytic carrier fixedly connected inside the support frame, a fixing plate fixedly connected to the inner wall of the first catalytic carrier, a second catalytic carrier fixedly connected to one side of the fixing plate, and ventilation holes provided inside the first and second catalytic carriers.

[0007] In a preferred embodiment, the connecting pipe is internally connected to a valve, which is used to control the flow rate of gas transmission.

[0008] In a preferred embodiment, a fixing screw is provided through the interior of the second connecting plate, and the bottom of the second connecting plate is detachably connected to the top of the base by the fixing screw.

[0009] In a preferred embodiment, the number of the first catalyst support, the second catalyst support, and the number of vent holes are all multiple, and the overall shape of the first catalyst support and the second catalyst support is cylindrical.

[0010] In a preferred embodiment, the filter assembly includes a first connecting plate detachably connected to the top of the filter box by mounting screws. The bottom of the first connecting plate is provided with a first filter screen, a second filter screen, and a third filter screen. The second filter screen is located on the side close to the first filter screen, and the third filter screen is located on the side close to the second filter screen.

[0011] In a preferred embodiment, mounting blocks are fixedly connected to the front and rear sides of the first filter plate, the second filter plate, and the third filter plate. A cross screw is provided through the inside of the mounting block, and the top of the mounting block is detachably connected to the bottom of the first connecting plate through the cross screw.

[0012] In a preferred embodiment, the mesh diameter inside the first filter plate is larger than the mesh diameter inside the second filter plate, and the mesh diameter inside the second filter plate is larger than the mesh diameter inside the third filter plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This catalytic combustion equipment for waste gas treatment distributes waste gas evenly into the catalytic combustion furnace by setting up a distribution plate and multiple distribution pipes, avoiding local catalyst overload or underutilization, and significantly improving catalyst utilization. The combined design of the first and second catalyst carriers increases the catalytic area and improves catalytic efficiency. At the same time, the design of the vent holes ensures smooth gas flow, further enhancing the treatment effect.

[0014] This catalytic combustion equipment for waste gas treatment employs a multi-stage filtration design in its filter components to progressively remove particles of different sizes, ensuring that the gas entering the catalytic combustion furnace is relatively pure and reducing contamination of the catalyst. Attached Figure Description

[0015] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a schematic diagram of the filtration mechanism in this utility model; Figure 3 This is a schematic diagram of the catalytic mechanism in this utility model; Figure 4 This is a schematic diagram of the supporting frame in this utility model; Figure 5 This is a schematic diagram of the structure of the first catalyst support and the second catalyst support in this utility model.

[0016] In the diagram: 1. Base; 2. Catalytic combustion furnace; 3. Filter box; 4. Inlet pipe; 5. Filter assembly; 6. Catalytic mechanism; 7. Outlet pipe; 51. First connecting plate; 52. Mounting block; 53. First filter screen; 54. Second filter screen; 55. Third filter screen; 61. Connecting pipe; 62. Valve; 63. Diverter plate; 64. Diverter pipe; 65. Second connecting plate; 66. Support frame; 67. First catalytic carrier; 68. Second catalytic carrier; 69. Fixing plate; 610. Vent hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0019] Please see Figure 1-5This utility model provides a catalytic combustion device for waste gas treatment, including a base 1, a catalytic combustion furnace 2, a filter box 3, an inlet pipe 4, an outlet pipe 7, a filter assembly 5, and a catalytic mechanism 6. The base 1 serves as the basic support for the entire device, and the catalytic combustion furnace 2 and the filter box 3 are fixedly connected to its top. The catalytic combustion furnace 2 is located on the top of the base 1, and an outlet pipe 7 is provided on its top for discharging the gas treated by catalytic combustion. The filter box 3 is adjacent to the catalytic combustion furnace 2, and an inlet pipe 4 is fixedly connected to one side of it for introducing the waste gas to be treated. The filter assembly 5 is provided inside the filter box 3 to perform multi-stage filtration of the waste gas to remove particulate matter and impurities.

[0020] The specific structure of filter component 5 is as follows: Figure 2 As shown, the filter box 3 includes a first connecting plate 51, a mounting block 52, and multiple filter screens. The first connecting plate 51 is detachably connected to the top of the filter box 3 by mounting screws, facilitating later cleaning and replacement. A first filter screen 53, a second filter screen 54, and a third filter screen 55 are sequentially arranged at the bottom of the first connecting plate 51. Mounting blocks 52 are fixedly connected to the front and rear sides of each filter screen. The mounting blocks 52 are detachably connected to the first connecting plate 51 by Phillips head screws. The mesh diameter of the first filter screen 53 is larger than that of the second filter screen 54, and the mesh diameter of the second filter screen 54 is larger than that of the third filter screen 55, to gradually remove particles of different sizes. After the exhaust gas enters the filter box 3 from the inlet pipe 4, it first passes through the first filter screen 53, initially filtering large particles; then it passes through the second filter screen 54, further filtering smaller particles; and finally, it passes through the third filter screen 55, completing the fine filtration of tiny particles.

[0021] The filtered gas enters the catalytic unit 6 through the connecting pipe 61. The structure of the catalytic unit 6 is as follows: Figure 3 As shown, the system includes a connecting pipe 61, a distribution plate 63, a distribution pipe 64, a support frame 66, and a catalytic carrier. The connecting pipe 61 is fixedly connected to one side of the filter box 3, and a valve 62 is installed inside it to regulate the flow rate of the gas transmission. The distribution plate 63 is located at one end of the connecting pipe 61 and distributes the gas evenly into multiple distribution pipes 64. The distribution pipes 64 extend from the distribution plate 63 into the interior of the catalytic combustion furnace 2 to ensure the uniform distribution of the gas in the catalytic combustion furnace 2. The support frame 66 is inserted into the interior of the catalytic combustion furnace 2, and a second connecting plate 65 is fixedly connected to its top. The second connecting plate 65 is detachably connected to the base 1 by fixing screws for easy maintenance later.

[0022] Multiple cylindrical first catalyst supports 67 and second catalyst supports 68 are fixedly connected inside the support frame 66. The first catalyst supports 67 and second catalyst supports 68 are metal supports, mainly composed of nickel-based alloys, and their specific structures are as follows. Figure 4 and Figure 5As shown, a fixing plate 69 is fixedly connected to the inner wall of the first catalyst carrier 67, and a second catalyst carrier 68 is fixedly connected to one side of the fixing plate 69. Both the first catalyst carrier 67 and the second catalyst carrier 68 have multiple vent holes 610 inside for gas flow and to increase the catalytic contact area. After the gas enters the catalytic combustion furnace 2 from the diversion pipe 64, it flows through the vent holes 610 of the first catalyst carrier 67 and the second catalyst carrier 68, and comes into full contact with the catalyst to complete the catalytic combustion reaction.

[0023] In actual operation, the exhaust gas first enters the filter box 3 through the inlet pipe 4. After being filtered step by step by the first filter plate 53, the second filter plate 54 and the third filter plate 55, particulate matter and impurities are removed, forming a relatively pure gas. The filtered gas enters the catalytic unit 6 through the connecting pipe 61. At this time, the valve 62 adjusts the transmission flow according to the gas flow requirements. After the gas enters the distribution plate 63, it is evenly distributed into multiple distribution pipes 64. The distribution pipes 64 guide the gas to different areas inside the catalytic combustion furnace 2. After the gas enters the catalytic combustion furnace 2 through the distribution pipes 64, it comes into contact with the first catalytic carrier 67 and the second catalytic carrier 68. The catalyst promotes the oxidation reaction of harmful components in the exhaust gas to generate harmless substances. The gas after catalytic combustion is discharged through the outlet pipe 7, completing the entire exhaust gas treatment process.

[0024] This invention significantly improves catalytic efficiency through optimized airflow distribution design. The design of the diversion plate 63 and multiple diversion pipes 64 evenly distributes the gas into the catalytic combustion furnace 2, avoiding local catalyst overload or underutilization. The combined design of the first catalyst carrier 67 and the second catalyst carrier 68 increases the catalytic area and improves catalytic efficiency. At the same time, the design of the vent 610 ensures smooth gas flow, further improving the treatment effect. In addition, the filter assembly 5 adopts a multi-stage filtration design to gradually remove particles of different sizes, reduce catalyst contamination, and extend the catalyst's service life.

[0025] Both the filter assembly 5 and the catalytic mechanism 6 are designed to be detachable, making them easy to clean, maintain and replace. For example, the first filter plate 53, the second filter plate 54 and the third filter plate 55 can be replaced by removing the cross screws on the mounting block 52; the support frame 66 can be disassembled by removing the fixing screws on the second connecting plate 65, which is convenient for users to maintain regularly. The above design not only extends the service life of the equipment, but also reduces the operating cost.

[0026] In summary, this invention significantly improves waste gas treatment efficiency and equipment operation safety by optimizing airflow distribution, improving the filtration system and catalyst carrier structure, and is applicable to the field of industrial waste gas treatment.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Catalytic combustion apparatus for exhaust gas treatment comprising a base (1), characterised in that: The top of the base (1) is fixedly connected to a catalytic combustion furnace (2) and a filter box (3). The filter box (3) is located away from the catalytic combustion furnace (2). An air inlet pipe (4) is fixedly connected to one side of the filter box (3). A filter assembly (5) is installed inside the filter box (3). An air outlet pipe (7) is fixedly connected to the top of the catalytic combustion furnace (2). A catalytic mechanism (6) is provided between the filter box (3) and the catalytic combustion furnace (2). The catalytic mechanism (6) includes a connecting pipe (61). The connecting pipe (61) is fixedly connected to the other side of the filter box (3). A diverter plate (63) is fixedly connected to one end of the connecting pipe (61). A diverter plate (63) is fixedly connected to one side of the diverter plate (63). There are multiple diversion pipes (64), one end of which extends into the interior of the catalytic combustion furnace (2). A support frame (66) is inserted into the interior of the catalytic combustion furnace (2). A second connecting plate (65) is fixedly connected to the top of the support frame (66). The second connecting plate (65) is located at the top of the catalytic combustion furnace (2). A first catalytic carrier (67) is fixedly connected inside the support frame (66). A fixing plate (69) is fixedly connected to the inner wall of the first catalytic carrier (67). A second catalytic carrier (68) is fixedly connected to one side of the fixing plate (69). Ventilation holes (610) are opened inside the first catalytic carrier (67) and the second catalytic carrier (68).

2. A catalytic combustion apparatus for exhaust gas treatment according to claim 1, characterized by: The internal passage of the connecting pipe (61) is connected to a valve (62), which is used to control the flow rate of gas transmission.

3. The catalytic combustion apparatus for exhaust gas treatment according to claim 1, characterized by: The second connecting plate (65) has a through-hole fixing screw, and the bottom of the second connecting plate (65) is detachably connected to the top of the base (1) by the fixing screw.

4. The catalytic combustion apparatus for exhaust gas treatment according to claim 1, characterized by: The number of the first catalyst carrier (67), the second catalyst carrier (68) and the vent (610) are all multiple, and the overall shape of the first catalyst carrier (67) and the second catalyst carrier (68) is cylindrical.

5. A catalytic combustion device for waste gas treatment according to claim 1, characterized in that: The filter assembly (5) includes a first connecting plate (51) that is detachably connected to the top of the filter box (3) by mounting screws. The bottom of the first connecting plate (51) is provided with a first filter screen (53), a second filter screen (54) and a third filter screen (55). The second filter screen (54) is located on the side close to the first filter screen (53), and the third filter screen (55) is located on the side close to the second filter screen (54).

6. A catalytic combustion apparatus for exhaust gas treatment according to claim 5, characterized by: The first filter plate (53), the second filter plate (54) and the third filter plate (55) are all fixedly connected to the front and rear sides of the mounting block (52). The mounting block (52) is provided with a cross screw through the interior. The top of the mounting block (52) is detachably connected to the bottom of the first connecting plate (51) by the cross screw.

7. A catalytic combustion apparatus for exhaust gas treatment according to claim 5, characterized by: The mesh diameter inside the first filter plate (53) is larger than the mesh diameter inside the second filter plate (54), and the mesh diameter inside the second filter plate (54) is larger than the mesh diameter inside the third filter plate (55).

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